# l1 = [1, 2, 3]
#
# l2 = l1[:]
# l2 = l1.copy()
# l2 = list(l1)
# l1[0] = 100
# print(l2)
# l2[1] = 200
# print(l1)
# l1 = [1, 2, 3, [4, 5]]
# l2 = l1[:]
# l3 = l1
# print(l1)
# print(l2)
# print(id(l1))
# print(id(l2))
# print(id(l3))
import copy
# copy.copy()
l1 = [1, 2, 3, [4, 5]]
l2 = copy.deepcopy(l1)
l2[3][0] = 400
print(l1)